Self-cleaning head shape



FIG. 1 is a perspective view of an instrument showing the ornamentaldesign of a self-cleaning head shape accordance with the invention;

FIG. 2 is an enlarged view of the illustration of FIG. 1;

FIG. 3 is a perspective view of the design of FIG. 1, rotated 90° arounda longitudinal axis of the device;

FIG. 4 is a perspective view of the design of FIG. 1, rotated 180°around a longitudinal axis of the device;

FIG. 5 is an enlarged view of the illustration of FIG. 4;

FIG. 6 is a perspective view of the design of FIG. 1, rotated 270°around a longitudinal axis of the device; and,

FIG. 7 is an end view showing the ornamental design of FIG. 1.

The broken line illustrations in FIGS. 1-7 illustrate environmentalstructure which forms no part of the ornamental design of the presentinvention.

CLAIM The ornamental design for a self-cleaning head shape, as describedand shown.